Rubidium compounds: rubidium fluoride
The rubidium in rubidium fluoride formally is in the oxidation state 1.
One way to make rubidium fluoride is to react the hydroxide with hydrofluoric acid. The resulting salt can then be purified by recrystallization.
RbOH(aq) + HF(aq) → RbF(aq) + H2O(l)
Rubidium(I) fluoride can also be made by the neutralization of rubidium(I) carbonate with hydrofluoric acid (in a platinum vessel since HF reacts with glass). The resulting salt can then be purified by recrystallization.
Rb2(CO3)(aq) + 2HF(aq) → 2RbF(aq) + H2O(l) + CO2(g)
While not a normal route of preparation because of the expense, rubidium metal reacts vigorously with all the halogens to form rubidium halides. So, it burns with fluorine, F2, to form rubidium(I) fluoride, RbF.
2Rb(s) + F2(g) → 2RbF(s)
Solid state structure
What follows is the calculated isotope pattern for the RbF unit with the most intense ion set to 100%.
mass % 104 100.0 __________________________________________________
The data on these compounds pages are assembled and adapted from the primary literature and several other sources including the following.
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